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/** * Binary search * @param {Array} list * @param {Number} element * @returns {number} */ function indexSearch(list, element) { let currentIndex, currentElement, minIndex = 0, maxIndex = list.length - 1; while (minIndex <= maxIndex) { currentIndex = Math.floor((maxIndex + maxIndex) / 2); currentElement = list[currentIndex]; if (currentElement === element) { return currentIndex; } if (currentElement < element) { minIndex = currentIndex + 1; } if (currentElement > element) { maxIndex = currentIndex - 1; } } return -1; }
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